GREENLAND was discovered without the use of magnetic compasses.

格陵兰岛被人类发现没有借助于磁罗盘。

youdao

Shipbuilding. magnetic compasses, binnacles, azimuth reading devices. vocabulary.

造船工业。磁罗盘罗盘座和方位角读数装置。词汇。

youdao

They sailed as far as America without the aid of magnetic compasses, which was no mean feat.

他们扬帆起航远至美洲，这在当时没有指南针的情况下绝非易事。

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But campers, drivers and sailors still keep magnetic compasses on hand to find their way home.

FORBES: No. 3 The Compass

Dr Ropars suspects it was being used as a sunstone because the magnetic compasses of the day were thrown out of kilter by iron cannon.

ECONOMIST: How Norsemen found their way round in cloudy weather

His handwritten field notes show street by street calculations in "chain lengths, " a painstaking process that used metal chains and heavy brass compasses, theodolytes and geodesic transits to reconcile the difference between true north and magnetic north readings.

WSJ: The Greatest Grid | Museum of the City of New York | Crosshatching a Miracle | By Ada Louise Huxtable